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1. (WO2018099498) PORTABLE DEVICE FOR MEASURING THE GEOMETRY OF AN OBJECT AND ITS SPATIALLY VARYING SURFACE REFLECTANCE ON SITE

Pub. No.:    WO/2018/099498    International Application No.:    PCT/CZ2017/050059
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Thu Nov 30 00:59:59 CET 2017
IPC: G01N 21/47
Applicants: CESKE VYSOKE UCENI TECHNICKE V PRAZE
Inventors: HAVRAN, Vlastimil
HOSEK, Jan
BITTNER, Jiri
NEMCOVA, Sarka
CAP, Jiri
Title: PORTABLE DEVICE FOR MEASURING THE GEOMETRY OF AN OBJECT AND ITS SPATIALLY VARYING SURFACE REFLECTANCE ON SITE
Abstract:
The invention concerns a portable device that, even for a device of small dimensions, increases the amount of the recorded imagery data of a measured object in a fixed position in order to obtain spatially varying surface reflectance data, i.e. Bidirectional Texture Function data, and the multidirectional imaging of real objects with the use of a basic three-dimensional object (2) equipped with first illumination units (4) and/or exit apertures of a light guiding system (21 ) in combination with multiplication of optical elements (1 1 ) contributing to the imaging on the acquisition system and/or second illumination units (9) and/or acquisition elements of the camera/detector type and/or third illumination units (12), by their placement on moveable arms (7, 8, 13) attached to the basic three-dimensional object (2). This principle is usable for small portable devices and allows for recording the visual appearance of surfaces on site without having to extract a sample from its environment.